Abstract
Chick calvaria labeled in vitro contain a triple-stranded collagen precursor that contains two pro α1 and one pro α2 chains. All chains contain cystine and are linked by S-S bonds. Ultracentrifugal analysis was used to measure the relative size of the disulfide-linked units. It is proposed that the S-S links help to determine the correct alignment of the triple-stranded structure.
Keywords: calvaria, ultracentrifugation
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